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  1.     #include <stdio.h>
  2.  
  3.     void foo(int *pi)
  4.     {
  5.         printf("[foo] `i` was %d\n", *pi);
  6.         (*pi)++; /* please be careful ^o^ */
  7.         printf("[foo] Now `i` is %d\n", *pi);
  8.     }
  9.  
  10.     int main()
  11.     {
  12.         int i = 0;
  13.         printf("[main] `i` was %d\n", i);
  14.         foo(&i);
  15.         printf("[main] Now `i` is %d\n", i);
  16.     }
Success #stdin #stdout 0s 3340KB
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stdin
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Standard input is empty
stdout
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[main] `i` was 0
[foo] `i` was 0
[foo] Now `i` is 1
[main] Now `i` is 1
https://ideone.com/KSBGX1
language:
C++ (gcc 8.3)
created:
11 years ago
visibility:
public

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